IMHO we would have to probably have small tax on revenue rather than profit - so only something similar to VAT but smaller and without deduction. VAT seems the most honest tax since you pay it only for what you buy. Also maybe property tax but with cumulative different tax brackets (0 tax for first property). 50% average yearly rental tax for each property that is being empty more than 3 months a year - just to discourage and deflate real estate bubble.
Eventually we probably need overproduction for goods at the bottom of maslov piramid: shelter, energy, food, water, transportation. Robotics revolution maybe is some hope.
